alias sylphiette -> sylphiette_(mushoku_tensei)

BUR #948 has been rejected.

create alias sylphiette -> sylphiette_(mushoku_tensei)

does it need explanation?

BUR #949 has been approved by @Lyren.

rename sylphiette -> sylphiette_(mushoku_tensei)

rename instead of alias because it's ambiguous

The bulk update request #949 (forum #5223) has been approved by @Lyren.

The bulk update request #948 (forum #5222) has been rejected by @Lyren.